在android中向数组添加元素

时间:2016-09-15 09:14:28

标签: java android arrays android-studio

我有一个从服务器返回的信息列表,我将它放在名为“items”的arraylist中。我想知道如何只提取部门并将它们放入一个简单的字符串数组中,我将其命名为department list。

这就是列表的样子

[
  {
 "Department": "Mobile Development",
    "Department": 22
  },
  {
    "   "Department": "IT Support",
    "Department": 13
  }]

这是我到目前为止编码的内容,但我认为我试图为每个添加的方式存在问题。

 private void loadCompanyInfo() {
     //final Context context = this.getActivity();
     final Context context = this.context;
      Organization client = new Organization(context);

      Organization.api(context).getCompanyInforamtion(client.getID()).enqueue(new Callback<Results<CostCentresResult>>() {
         @Override
         public void onResponse(Call<Results<CostCentresResult>> call, Response<Results<CostCentresResult>> response) {
            if (response.isSuccessful()) {
               try {
                  Items = new ArrayList<>();
                  companyInfoList = new ArrayList<>();

                  Items.addAll(response.body());
                  if(Items.contains("Department")) {
                     Items.get(Items.indexOf(0));

                     for (int i = 0; i < Items.size(); i++) {
                        companyInfoList.add(Items[0])
                     }

                  }

               } catch (Exception ex  ) {
                  ex.printStackTrace();
                  ex.getMessage();
                  ex.getCause();
                  ex.getClass();
               }
            }
         }
         @Override
         public void onFailure(Call<Results<CostCentresResult>> call, Throwable t) {
// TODO: handle ex
            Errors.handleException(t);
         }

      });
   }

}

1 个答案:

答案 0 :(得分:0)

以下代码将帮助您从服务器响应中获取部门列表:

try {
            ArrayList<String> mDepartmentList = new ArrayList<String>();
            JSONArray serverResponseJsonArray = new JSONArray(response.body());
            if (serverResponseJsonArray != null
                    && serverResponseJsonArray.length() > 0) {
                for (int i = 0; i < serverResponseJsonArray.length(); i++) {
                    JSONObject departmentJsonObj = serverResponseJsonArray
                            .getJSONObject(i);
                    if (departmentJsonObj != null
                            && !departmentJsonObj.equals("")) {
                        if (departmentJsonObj.has("Department")) {
                            mDepartmentList.add(departmentJsonObj
                                    .getString("Department"));
                        }
                    }
                }
            }

        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }